"I was inclined to judge the validity of a man's faith more by the depth of his roots in reality and brotherhood and love. So I felt more at home, shall we say with some Zoroastrians in the Far East, than I did with some Catholic missionaries."

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Such is professional jealousy; a scientist will never show any kindness for a theory which he did not start himself. There is no feeling of brotherhood among these people. Indeed, they always resent it when I call them brother. To show how far their ungenerosity can carry them, I will state that I offered to let Prof. H--y publish my great theory as his own discovery; I even begged him to do it; I even proposed to print it myself as his theory. Instead of thanking me, he said that if I tried to fasten that theory on him he would sue me for slander.

— Mark Twain